Los Angeles Pilot Project Using Japanese Earthquake Resistant Joint Ductile Iron Pipe

Transcription

1 Los Angeles Pilot Project Using Japanese Earthquake Resistant Joint Ductile Iron Pipe Los Angeles Department of Water & Power Craig A. Davis and Joe Castruita Presented to California-Nevada Section American Water Works Association October 1, 2013

2 Contents Introduction to the LADWP Overview Historic perspective on earthquake risk in LA (1994 Earthquake) Earthquake Resistant Ductile Iron Pipe (ERDIP) Overview Examples of ERDIP performance in 2011 earthquake and other hazards Summary of the LADWP Pilot Project Purpose Implementation plan Site selection criteria Steps taken to implement pilot project Focus on 1 st project site at Contour Dr. Planning, Design, Procurement, Construction Acceptance criteria and initial results Technical and cultural exchange Outreach Media interest Conclusions Questions and Answers

3 LADWP OVERVIEW Largest Municipal Utility in USA Founded 1902 Serves 4.1-million people 712,000 water service connections 1214-square kilometer service area Receives water from: 4 aqueducts Local wells LADWP owns and operates the water and power systems

4 Area shown in Figure 2 (damaged influent and effluent lines) (power loss) Water System Performance in 1994 GTL Desoto Reservoir STL RoTL TT Damaged Tanks BGT = Beverly Glen Tank CCT = Coldwater Canyon Tank GHT = Granada High Tank TT = Topanga Tank ZT = Zelzah Tank GHT ZT RTL BGT Northridge Earthquake CCT 2 locations) 3 locations) (power loss, damage to south half) (power loss) (roof collapse) Area shown in Slide 5 Van Norman Complex Additional Damage -High Speed Channel - Bypass Channel - Power Plant Tailrace - LA25 (MWD connection) - LA35T (MWD connection) - VNPS I Discharge Line - VNPS II Discharge Line Water System Damages 14 repairs to the raw water supply conduits 60+ repairs to treated water transmission pipes 1013 repairs to distribution pipe > 200 service connection repairs 7 damaged tanks Temporary suspension of half the treatment plant service Power lost throughout City $41 million total repair costs Los Angeles water supply and transmission subsystems showing major facilities and 1994 damages

5 Los Angeles Water Service (%)_ Northridge Earthquake Area shown in Figure L.A. DELIVERY SERVICES (damaged influent and effluent lines) (power loss) GTL GHT Desoto Reservoir STL RoTL RTL 2 locations) 3 locations) (power loss, damage to south half) (power loss) (roof collapse) TT ZT BGT CCT Damaged Tanks BGT = Beverly Glen Tank CCT = Coldwater Canyon Tank GHT = Granada High Tank TT = Topanga Tank ZT = Zelzah Tank Van Norman Complex Additional Damage -High Speed Channel - Bypass Channel - Power Plant Tailrace - LA25 (MWD connection) - LA35T (MWD connection) - VNPS I Discharge Line - VNPS II Discharge Line 100 Delivery Normal Service Level Quantity Fire Protection 80 Quality 159,434 service connection outages 22% of all services ~670,000 residents All delivery service restored in 7 days Pipe repairs completed several weeks later t Time (days) Functionality 7 DAYS

6 Network Resilience by Incorporating Seismic Resistant Distribution Pipes Identify pipe materials and joint types that provide adequate seismic resistance Identify critical/important distribution pipes Replace critical pipes based on seismic risk and in collaboration with the Asset Management and Pipe Replacement Programs Recognize earthquake damages and water service outages will occur entire network cannot be cost-effectively replaced in near term Develop plan to ensure water service restorations achieve community resilience within an acceptable timeframe Focus on most critical water restorations first Develop long-term network improvement program (e.g. 25 to 50 years)

7 Earthquake Resistant Ductile Iron Pipe Comparison of Joint Structure General Joint Earthquake-Resistant Joint (Flexible Joint) (Chain structure Joint) Rubber Gasket Rubber Gasket Lock Ring T-type Spigot Projection NS-type Expand Deflect No Expansion if lock joint used Expand / Contract Deflect Lock

8 ERDIP Characteristics Property Performance ISO Amount of expansion/contraction ±1% of L Class S-1 Slip-out resistance 3D kn Class A Joint deflection angle 6-8 *1 Note) L : Nominal pipe length (millimeters) D : Nominal diameter of pipe (millimeters) *1) Joint deflection angles depend on pipe diameters. No Damage or Leaks after 40-years of use Experienced many large Japanese earthquakes Subjected to several meters of permanent ground deformation

9 Diameter range of the earthquake resistant joints Joint Diameter Range (mm/inch) Slip-on Type Mechanical Type GENEX NS S 75~250mm (3 ~10 ) 75~450mm (3 ~18 ) 500~1000mm (20 ~30 /3.3 ) 500~2600mm (20 ~102 /8.5 )

10 The 2011 Great East Japan Earthquake Overview of Damages on Water Pipelines A B C D E Water works bureau Sendai City Miyagi Pref. Ishinomaki Chiba Pref. Mito City Water supply population Maximum seismic intensity Pipeline length (km) Number of damages Damage rate (/km) 1,017,407 6U 3, ,852,000 (water supply) 6U ,025 6U 1, ,928,062 6L 8, ,133 6L 1, A E D B Epicenter Seismic intensity in J.M.A. scale C 4 5L 5U 6L 6U 7

11 CIP CIP ERDIP ERDIP DIP DIP SP (Weld) SP(Weld) SP (Screw SP(Screw joint) joint) PVC PVC Others Others Damage rate 被 害 率 ( 件 /km) Pipe material comparison [No./ km] DIP is more reliable material than others. ERDIP suffered no damage the same as previous big earthquake.

12 Damaged points and liquefied areas along Tokyo Bay Many damages of pipelines occurred in the liquefied areas Drained land Loam plateau Urayasu city Sandbank Reclaimed land Damage rate =1.64 point/km Damaged points of pipeline Liquefied areas Red :Liquefied Blue:Not liquefied Source: (Left drawing) map: Geospatial Information Authority of Japan. Landform classification: National Research Institute for Earth Science and Disaster Prevention (Right drawing) Ministry of Land, Infrastructure, Transport and Tourism, Regional Development Bureau

13 ERDIP suffered no damages in liquefied area ERDIP suffered no damages in the liquefied areas where many damages occurred at water pipelines DN700ERDIP Subway Tozai Line JR Keiyo Line 1km Urayasu city

14 DN150, 200 NS-type (Landslide of Road by Tsunami) DN200 NS-type DIP Damaged DN75 PVC 継 手 部 の 離 脱 DN150 NS-type DIP

15 DN350 NS-type DIP at Water Bridge DN350 NS-type DIP Tsunami

16 SII, NS-type DIP Withstand Large Ground Subsidence Ground Subsidence Subsidence (1.3m) Liquefaction DN300 SII-type DN150 NS-type

17 SII, NS-type DIP withstand Landslide by typhoon Landslide at Road DN400 SII-type DN150 NS-type

18 Training LADWP Earthquake Resistant Joint Ductile Iron Pipe Pilot Project Construction

19 Pilot Project using Earthquake Resistant Joint Ductile Iron Pipe (ERDIP) The ERDIP is 1 of several pipes that meets the proposed criteria for investigating use in LA for seismic resistance Other pilot projects are being undertaken with HDPE and PVC Kubota and LADWP have collaborated to implement a pilot project to install ERDIP in Los Angeles Currently ERDIP only available and used in Japan LADWP is the 1 st to use in USA Additional advantages (other than seismic) Landslide risks Erosion Thermal stresses Overall, the ERDIP may provide significant infrastructure reliability above the seismic risk

20 Pilot Project Purpose Purpose of pilot project is to: Allow the LADWP to become acquainted with the ERDIP Obtain direct observations and experience of the design and installation procedures Compare the design and installation of ERDIP with pipes normally installed by LADWP Make our own assessment on suitability for using the ERDIP to improve network reliability Determine if ERDIP is helpful for improving the LA Water Infrastructure

21 Pilot Project Outline We are here For Reseda Blvd. (1) Presentation 1) Kubota sends pipes from Japan. 2) Kubota gives a presentation and demonstration on ERDIP (NS and GENEX models) pipe in Los Angeles. (2) Develop the pilot project plan (3) Preparation for installation In process for 3 more sites 1) LADWP settles the details of the pilot project (pipe diameter, length, schedule, etc). 2) LADWP s management approves the project plan. 1) Kubota supports the pipeline design phase with training and reviews. 2) Kubota makes installation manual, and helps to addresses items needed to meet local requirements. 3) Agreement of purchase conditions between LADWP and Kubota. (4) Production and Export (from Kubota) 1) Kubota produces pipe. 2) Export and transport (logistic, stock yard, etc). 3) Procure the fittings for joints between JWWA 1 pipe and AWWA 1 pipe standards. (5) Construction 1) Kubota dispatches the pipe installation instructors from Japan. 2) Kubota provides training for field crews appointed by LADWP. 3) LADWP undertakes construction using their own field crews. We are here For Contour Dr. (6) Feedback 1) LADWP compiles the evaluation (design, construction, cost, etc). 2) Kubota improves NS and GENEX for US market, (if necessary). (7) Promotion Present Results 1) LADWP announces the achievement of pilot project. 1 Japan Water Works Association 2 American Water Works Association

22 Pilot Project Site Selection For 1 st two sites: Identify areas damaged by ground failure during the 1994 Northridge Earthquake Balboa Blvd Reseda Blvd Region Studio City/Sherman Oaks Region Review pipe layout Compare with planned pipe replacements Select pipes to be replaced as part of pilot project Implement pilot project in a manner consistent with a longterm seismic improvement program. Currently have two pilot sites Reseda Blvd. (Relatively level ground in San Fernando Valley) Contour Drive (Sloped and curvy roads in Studio City) Select additional pilot project sites using resilience criteria West LA Central LA Harbor

23 Pilot Project Locations Considered Balboa Blvd region Roscoe Blvd region Sherman Oaks/Studio City region

24 LONGRIDGE LADWP originally planed to replace ~1750 of 6 line; 157 psi (1.1 Mpa) Proposed pilot to include ERJDIP Training performed 1/15 to 1/18/13 Initiated Construction on 1/28/ installed ERDIP installation completed on April 30, 2013 (53 work days) Main Replacement Contour Drive SHERWOOD STERN MATILIJA DAVANA # BENEDICT CANYON GLENRIDGE BENEDICT CANYON # DEER # WESLIN WOODMAN OAK CANYON BOBSTONE KOSTER DEBSTONE CONTOUR ALLOTT SUNNYSLOPE GREENBUSH # # CHELTENHAM INWOOD DIXIE CANYON GALEWOOD Contour Dr. Main Replacement -- Ventura Blvd. Hillside Area VENTURA CANYON # # # CONTOUR RAND # # NEWCOMB NAGLE # CHELTENHAM VALLEYHEART VALLEY VISTA # STONERIDGE # # Size 6" DI Length 1800 feet Pressure 157 psi ALOMAR Streets # Leaks $ Breaks Pilot Area Main projects Dist Pipes N Feet

25 Steps Taken to Implement Pilot Project Learned about ERDIP over past decade Met with Kubota Corp. (Mr. Toshima) in October 2011 Identified opportunity for pilot project Concept encouraged by LADWP managers

26 Kubota ERDIP Presentation and Demonstration LADWP-Kubota meetings held in LA on January 23-25, 2012 Presentation and demonstration held in Los Angeles on January 24, 2012 Invited guests from waterworks community Over 110 attended from 17 organizations Support from WRF Demonstration allowed LADWP handson learning experience with GENEX Positive feedback LADWP crews demonstrating GENEX Pipe assembly LADWP-Kubota team Mr. Hara, Kubota Engineer Mr. Toshima, Kubota Manager

27 Pipe Design, Contour Drive Design Training by Kubota Engineers Design performed by LADWP Engineers Design checked by Kubota Engineers

28 Pipe Design, Contour Drive

29 Steps Taken to Implement Pilot Project Worked with Kubota on: Pipe layout plans and design changes AWWA to JWWA adaptors Installation procedures Specifications Backfill requirements (sand vs cement slurry) Worked closely by Follow up meetings held in LA on: August 7, 2012 October 17, 2012 Socket : Mechanical joint (for AWWA spigot) Socket: Mechanical joint (for JWWA spigot)

30 Procurement and Delivery Procurement Informal contract (>$150,000) Sole source Ordered extra materials for: Training Field alterations Delivery in December, 2012

31 Technology Exchange LADWP traveled to Japan Nov Engineer Distribution Manager Field/Training Supervisor Meet with: Kobe Waterworks Bureau Sendai Waterworks Bureau Kyoto University Direct exchange of information at equal levels See earthquake damages and pipe performances Observe ERDIP installation by Japanese Visit Kubota manufacturing plant for ERDIP

32 Cultural Exchange Sendai Beef Nanzen Temple, Kyoto Sendai Sushi

33 Cultural Exchange Kobe Beef Kobe elementary school, emergency evacuation center

34 Training and Installation in LA

35 LADWP Installation Video

36 Acceptance Criteria Contour Drive Near-term criteria Item Criteria Status as of July 1, Acceptance of Concept Achieved 2 Application to network resilience Able to meet concept outline 3 Ability to learn about the technology application Achieved, January Ability to perform engineering design for ERDIP Achieved by LADWP staff 5 Ability to purchase pipe Achieved Fall Ability to train and certify installation crews for ERDIP Achieved January Ability to adopt local installation procedures to the ERDIP technology (e.g., slurry trench fill) Achieved, Summer Field crew ability to install correctly Achieved, Feb./March Positive acceptance from LADWP Distribution Division (Management and supervisor levels) Achieved, management, supervision, and const. crews interviewed May 9, Installation rate (feet per day) Acceptable, similar compared to other similar projects. 11 Project cost in comparison with other pipe projects (standard DIP, steel, nonmetallic, etc.) 12 Workability (the degree of ease the material can be cut, shaped or smoothed by hand or machines and capable of being put into effective operation) Acceptable, within an acceptable range at pilot stage. Acceptable and overall positive input from field crews. Long-term Criteria: 1. Investigation corrosion resistance of GenEx coating 2. Actual seismic performance * * Seismic performance is not a criterion for accepting use of this pipe on a full scale production level. We must accept the documented positive performance in Japan of no breaks or leaks for nearly 40 years.

37 PILOT PROJECT RESULTS CONTOUR DRIVE Costs Construction: 8% to 13% increase, mostly from material cost. Engineering: cost about doubled, increased total project cost by ~7%. Project: 15% to 20% total project cost increase. Workability Construction crews found the material to be very workable, in some cases easier than the Tyton joint pipe normally placed by the LADWP The tools are very good, easy to use, and helped make installation go smoothly. Smooth Process: Removed straining and as a result eliminated injuries that otherwise can occur when forcing the pipe spigot into the bell, & Prevented rolling the gaskets out of the bell.

38 LADWP Outreach Purpose: provide others an opportunity to learn from the LADWP pilot project while it was being undertaken educate other water agencies, associations, universities, and consulting firms about the ERDIP in case it may be useful for them Demonstration project, January 2012 Over 100 participants from LADWP, other agencies, consultants, and Universities Site Visits, February and March site tours Attendees included 60 people from 17 organizations (not including LADWP or Kubota)

39 Site Visit Outline 10:00AM 1.5-hour presentation covering: Background and purpose for using the ERJ-DIP, and Plan and purpose of the LADWP Pilot Project Questions and Answers 11:30 PM Lunch in cafeteria (on your own) 12:15 PM Take LADWP vans to the site 1:00 PM View placing and jointing the pipe. Communication with LADWP installation supervisor. 2 to 2:30 Depart site and return to JFB. End of meeting.

40 Media Attention Los Angeles ERDIP Pilot project has captured attention of international media 9 News Paper articles 7 in Japan 2 in USA (LA Daily News & Wall Street Journal) 7 Television broadcasts 3 in Japan 1 in San Francisco (KTVU) 3 International (NHK World)

41 Media Attention

42 Pilot Project Status Other sites Reseda Blvd. ERDIP Design in progress Phase I in progress Installing 1 st line of standard DIP Material Procurement method Formal (present to Board of W&P Commissioners) Construction planned to initiate around July 2014 Western, Central, Harbor In the process of selecting sites for design Reseda Blvd. Design Drawings

43 Summary Kubota ERDIP is one of several potential pipes that can help improve the LADWP distribution network seismic performance Pilot project provides: Direct experiences to determine applicability of new technologies into the network Opportunity to apply seismic improvement concepts into the distribution network Incremental seismic improvements Distribution network seismic improvements are important for LADWP infrastructure reliability Pilot Project results are positive so far

44 Questions?